The top model is the Odin GT 800W, this power supply has four +12V rails which each deliver 18A (=68A).
One of the most special features of the Odin GT power supplies is their software control. I'm not sure if any other power supply on the market today has this feature. Here's what Gigabyte has to say about this feature:
Behold. A software management solution embedded in this little monster. How this works? In brief, it manages the following: output voltages and load on each rail, power fan speed tweak, localized or preset temperature monitors, power supply lighting control, proximity warning bells and even present user modes for performance, normal use or silent operation. This equates to absolute manageability.Other features include quad 12V+ rail design, +80% efficiency, a silent 140mm fan, high-quality Japanese capacitors and modular cable management.